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I was able to remove the "dead" host (that isn't really dead) from the overview display. I had to kill all gmond's everywhere, and the gmetad. Then I removed the rrd files for the "dead" host from gmetad's rrds directory, and the rrd directory itself. Then I removed the "dead" host's IP address from gmetad.conf. Then I brought up all the gmonds (except the "dead" one) and then the gmetad. Apparently, these steps will have to be added to our failover procedure. Martin Knoblauch wrote: I don't know what "designated as a collector" means....Also, just to better understand the situation, what is the exact setup? Is one of the "gmond"s designated as a collector? Or do all "gmond"s carry all metrics from all hosts? Which "gmond" is queried by "gmetad" (snippet from config file)? You should telnet/nc to that "gmond" and check whether it has current metrics from "B". Nor do I know how to control which gmonds carry all metrics from which hosts. There is only one udp_send_channel in gmond.conf, and the host in there is the one running gmetad. My /etc/ganglia/gmetad.conf file has only one line in it. data_source "clustername" followed by a list of IP addresses of all the gmond hosts. (My original understanding was the gmetad queries each gmond, or the gmonds all report to the gmetad. So I just listed all the IP addresses there. But now it seems the flow is more complex than that.) I don't have a manpage for gmetad.conf, so I just guessed what to put in there from the sample file. -Cameron This email message is for the sole use of the intended recipient(s) and may
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